- Top Markers for the Marker Buoy 500.
- Available in North, South, East and West.
- Comes complete and installed on the Marker Buoy 500.
- Click here for PDF of line drawing
Cardinal marks indicate that the deepest water in the area lies to the named side of the mark. This convention is necessary even though, for example, a North mark may have navigable water not only to the north but also East and West of it. The mariner will be safe to the North, but must consult the relevant chart for further guidance.